二重鋼管付きコンクリート杭、その設計方法、その使用方法及びそれを備える杭基礎

Japanese Patent JP7205824

B2

To provide a concrete pile with double steel pipes, a design method for the same, the usage of and a pile foundation including the same, the concrete pile with double steel pipes improved in toughness compared to conventional ones when axial force acts thereon.SOLUTION: The concrete pile with double steel pipes includes a hollow, cylindrical outer steel pipe, a hollow, cylindrical inner steel pipe disposed inside the outer steel pipe, and a cylindrical concrete part that is disposed between the outer steel pipe and the inner steel pipe in contact with the outer steel pipe, and that is formed of concrete. A limit axial force is set in the concrete pile with double steel pipes. A relationship is satisfied that is shown in the following formula: tsi≥0.02×Dsi, where the outer diameter of the inner steel pipe is Dsi and the thickness of the inner steel pipe is tsi. The limit axial force is set based on one or more of the yield strength of the outer steel pipe, the yield strength of the inner steel pipe and the yield strength of the concrete part.SELECTED DRAWING: Figure 27

JP2001303562	METHOD FOR CONSTRUCTING WIDE-FLANGE SHAPE STEEL PILE COMBINED WITH SOIL CEMENT
JP4609627	Ready-made pile joining method, ready-made pile joining hardware
JP5111291	Pile construction equipment

Yuma Honma
Kazumasa Suga
Yu Nishimura
Youichi Asai
Asami Yamaji

JP2018231309A

January 17, 2023

December 11, 2018

Click for automatic bibliography generation  

Japan Pile Co., Ltd.
Toyo Asano Co., Ltd.

E02D5/30

JP2016223207A
JP2017197975A
JP2018184822A

岸田 英明、高野 昭信,鋼管ぐいの座屈と端部補強,日本建築学会論文報告集,日本,日本建築学会,1973年07月25日,第213号,第29頁-第38頁,http://dx.doi.org/10.1016/j.memsci.2017.09.076

圷 正夫

Previous Patent: Gripping mechanism and conveying device

Next Patent: Fragment antibody and protein crystallization method using the fragment antibody